netdata/python.d/python_modules/bases/loggers.py at master · jamesblunt/netdata · GitHub

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# -*- coding: utf-8 -*-

# Description:

# Author: Ilya Mashchenko (l2isbad)

import logging

import traceback

from sys import exc_info

try:

from time import monotonic as time

except ImportError:

from time import time

from bases.collection import on_try_except_finally

LOGGING_LEVELS = {'CRITICAL': 50,

'ERROR': 40,

'WARNING': 30,

'INFO': 20,

'DEBUG': 10,

'NOTSET': 0}

DEFAULT_LOG_LINE_FORMAT = '%(asctime)s: %(name)s %(levelname)s : %(message)s'

DEFAULT_LOG_TIME_FORMAT = '%Y-%m-%d %H:%M:%S'

PYTHON_D_LOG_LINE_FORMAT = '%(asctime)s: %(name)s %(levelname)s: %(module_name)s: %(job_name)s: %(message)s'

PYTHON_D_LOG_NAME = 'python.d'

def limiter(log_max_count=30, allowed_in_seconds=60):

def on_decorator(func):

def on_call(*args):

current_time = args[0]._runtime_counters.START_RUN

lc = args[0]._logger_counters

if lc.logged and lc.logged % log_max_count == 0:

if current_time - lc.time_to_compare <= allowed_in_seconds:

lc.dropped += 1

return

lc.time_to_compare = current_time

lc.logged += 1

func(*args)

return on_call

return on_decorator

def add_traceback(func):

def on_call(*args):

self = args[0]

if not self.log_traceback:

func(*args)

else:

if exc_info()[0]:

func(*args)

func(self, traceback.format_exc())

else:

func(*args)

return on_call

class LoggerCounters:

def __init__(self):

self.logged = 0

self.dropped = 0

self.time_to_compare = time()

def __repr__(self):

return 'LoggerCounter(logged: {logged}, dropped: {dropped})'.format(logged=self.logged,

dropped=self.dropped)

class BaseLogger(object):

def __init__(self, logger_name, log_fmt=DEFAULT_LOG_LINE_FORMAT, date_fmt=DEFAULT_LOG_TIME_FORMAT,

handler=logging.StreamHandler):

"""

:param logger_name: <str>

:param log_fmt: <str>

:param date_fmt: <str>

:param handler: <logging handler>

"""

self.logger = logging.getLogger(logger_name)

if not self.has_handlers():

self.severity = 'INFO'

self.logger.addHandler(handler())

self.set_formatter(fmt=log_fmt, date_fmt=date_fmt)

def __repr__(self):

return '<Logger: {name})>'.format(name=self.logger.name)

def set_formatter(self, fmt, date_fmt=DEFAULT_LOG_TIME_FORMAT):

"""

:param fmt: <str>

:param date_fmt: <str>

:return:

"""

if self.has_handlers():

self.logger.handlers[0].setFormatter(logging.Formatter(fmt=fmt, datefmt=date_fmt))

def has_handlers(self):

return self.logger.handlers

@property

def severity(self):

return self.logger.getEffectiveLevel()

@severity.setter

def severity(self, level):

"""

:param level: <str> or <int>

:return:

"""

if level in LOGGING_LEVELS:

self.logger.setLevel(LOGGING_LEVELS[level])

def debug(self, *msg, **kwargs):

self.logger.debug(' '.join(map(str, msg)), **kwargs)

def info(self, *msg, **kwargs):

self.logger.info(' '.join(map(str, msg)), **kwargs)

def warning(self, *msg, **kwargs):

self.logger.warning(' '.join(map(str, msg)), **kwargs)

def error(self, *msg, **kwargs):

self.logger.error(' '.join(map(str, msg)), **kwargs)

def alert(self, *msg, **kwargs):

self.logger.critical(' '.join(map(str, msg)), **kwargs)

@on_try_except_finally(on_finally=(exit, 1))

def fatal(self, *msg, **kwargs):

self.logger.critical(' '.join(map(str, msg)), **kwargs)

class PythonDLogger(object):

def __init__(self, logger_name=PYTHON_D_LOG_NAME, log_fmt=PYTHON_D_LOG_LINE_FORMAT):

"""

:param logger_name: <str>

:param log_fmt: <str>

"""

self.logger = BaseLogger(logger_name, log_fmt=log_fmt)

self.module_name = 'plugin'

self.job_name = 'main'

self._logger_counters = LoggerCounters()

_LOG_TRACEBACK = False

@property

def log_traceback(self):

return PythonDLogger._LOG_TRACEBACK

@log_traceback.setter

def log_traceback(self, value):

PythonDLogger._LOG_TRACEBACK = value

def debug(self, *msg):

self.logger.debug(*msg, extra={'module_name': self.module_name,